CASE
====
syntax: (case <keyform> {({<key> |
({<key> ...})} {<form> ...}) ...})
case is a conditional that chooses one of its clauses
to execute by comparing a value to various constants,
which are typically keyword symbols, integers, or
characters (but may be any objects).
example: >(case 1 (3 'c)
(2 'b)
(1 'a)
(t 'end))
A